Take-up mechanism for looms



Patented Spt. I3, |898.

No. 6I0,636.

J. H. NURTHRUP.

TAKE-UP MECHANISM FDR LOOMS.

(Application med.' Feb. 1s, 159s.)

2 Sheets-Sheet` I.

(No Model.

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No. 6I0,636. Patented Sept. I3, |898. J. H. NORTHROP.

TAKE-UP MECHANISM FUR LOOMS.

4(Application filed Feb. 18` 189B.)

(No Model.) 2 Sheets-Sheet 2.

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JAMES H. NORTHROP,` OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO THE DRAPER COMPANY, OF SAME PLACE AND PORTLAND, MAINE.

TAKE-IUP MECHANISM FOR LOOIVIS.

SPECIFICATION forming part of Letters Patent No. 610,636, dated September 13, 1898.

Application filed February 18, 1898. Serial No. 670,739. (No model.)

To cir/ZZ whom, t may concern:

Be it known that I, JAMES H. NORTHROP, of l-Iopedale, county of Worcester, State of Massachusetts, have invented an Improvement in Take-Up Mechanism for Looms, of which the following description, in connection with the accompanying drawings, is 'a speciiication, like letters and numerals on the drawings representing like parts.

This invention has for its object the production of novel take-up mechanism for looms, whereby the cloth-roll is kept firmly but with a yielding pressure against the take-up roll, means being provided for readily removing the cloth-roll from its bearings.

Figure l, in front elevation and centrally broken out, represents a loom with my invenvion applied thereto. Fig. 2 is a vertical sectionithereof on the line x, Fig. 1, looking toward the right. Figs. 3 and 4 are detail views, on the line x of the device, for limiting the movement of the cloth-roll supports; and Fig. 5 is a centrally-broken-out view in elevation of a modified form of device for controlling the supports for the cloth-roll journals.

The lay-sword AX is shown as provided `with a bracket a near its lower end, to which is pivoted the pawl-carrier a', provided with a take-up pawl d2 (see dotted lines, Fig. 2) to engage the teeth of the ratchet-wheel a3, mounted to rotate on a stud a4, and having an attached pinion co5.

A gear b, having a long attached pinion b', is rotatably mounted on a stud 11X, held by a suitable nut b2 in an arm b3, pivoted on the stud b5, extended inward from the loom side A, on which stud the large gear h6 is rotatably mounted. The small gear b is in mesh with and is driven by the ratchet-wheel pinion o5, and the large gear b is in mesh with the pinion b, by which rotation is imparted to said gear b, the latter in turn meshing with a gear t7, fast on the shaft of the take-up roll T.

A slotted quadrant bs, vforming a part of the arm b3, is held in adjusted position by means of a bolt 2 and nut 3, the bolt passing through a hole in a bracket blo, secured to the inner face of the loom side A and bent to cross over to the inner side of the quadrant. As will be understood, the arm b3 supports the changegear, and by means of the quadrant it is held in adjusted position. The detent-pawl c, slotted to receive th fulcrum-stud c', has a lateral lug c2, which is wardly at F', for a purpose to be described.

The journals g of the cloth-roll shaft G are adapted to rest in open sockets in the upper ends of rack-bars gx, which slide in the slots of the stands F, each rack-bar being in engagement with a rack-gear g', fast on a shaft g2, mounted in bearings f of the stands at or near their lower ends. A collar g3, fast on said shaft, has attached thereto one end of a strong spiral spring S, encircling the shaft, the other end of the spring being attached to the hub hof a wormgear h, loosely mounted on the shaft, said gear meshing with a worm h2 on a shaft h3, mounted in a bearing hX on a bracket h4, secured to the cross-girth A2, the shaft extending toward the front of the loom. The worm locks the worm-gear h from rot-ation, and the spring continually tends to turn the shaft g2 oppositely to the arrow 10, Fig. 2, to maintain the rack-bars elevated, and thereby press the cloth-roll tightly, yet with a yielding pressure, against the takeup roll T, so that the cloth will be wound in acompact hard roll, the shaft g2 and gears g' constituting means to positively connect the sliding cloth-roll supports to effect the movement of said supports in unison. As the weight of the cloth-roll increases the rackbars gX are depressed, rotating the shaft g2 in the direction of the arrow 10, winding up the spring S and gradually increasing its tension to compensate for the increased weight of the cloth-roll. When the cloth-roll journals g reach the odset portions F of the IOO stands, a suitable handle II is applied to the worm-shaft h3, and the latter is rotated by hand to unwind the spring, and the roll of cloth is removed, the length of the roll-journals being preferably such that they extend into the slots f, whereby lateral displacement is prevented except at the offset portions F of the stands. Vhen a new roll-shaft is inserted at the offsets F, the shaft h3 is oppositely.

7rotated to wind up the spring, the tension of the latter acting to effect rotation of the shaft g2 to thereby elevate the rack-bars gx and the roll-shaft into position against the take-up roll ready to wind a fresh roll of cloth.

When not in use, the crank or handle His reversed on the worm-shaft h3, so that it will not interfere with the movements of the attendant, and also for the purpose of preventing the worm-shaft from turning by the jar of the loom.

I have provided a novel device forl positively limiting the winding and unwinding of the spring by hand, so that it will be stopped at the proper points when the tension is released to remove the wound roll of cloth and also when the spring is rewound preparatory to beginning the winding of a new roll.

A segmental lug h5 projects laterally from the ri ght-hand face of the worm-gear h', viewing Fig. l, and a loose collar g5 on the shaft g2 has a projection Q6 in the path of the lug h5. Beyond the collar an upright stand m, attached to the bracket h4, has a hooked or notched upper end fm to partially embrace the shaft g2, Figs. 3 and 4t, while on its inner face the stand m is provided with a lateral stop m2, extending into the path of the projection Q6 of collar g5. Remembering that the wormgear 7L is normally locked, the segmental lug h5 will be in the position shown in Figs. 1 and 3 when the winding of the roll is completed. Now rotation of the said gear in the direction of arrow 15, Fig. 3, will carry the said lug h5 around until it engages the opposite side of the projection g6 on the loose collar g5, and then both lug and projection will be moved in unison until the leading edge of the projection g6 engages the fixed stop m2, Fig. 4, and further rotation of the worm-gear will be prevented. The spring is then unwound sufficiently, and the roll of cloth is removed and a new roll-shaft inserted and mounted on the rack-bars. From the position shown in Fig. 4 the worm-gear is then rotated in the direction of arrow 20, the lug h5 moving away from the projection g(i and again engaging its opposite side and moving it thereafter with the lug until the outer side of the fixed stop m2 engages the projection on the loose collar, as in Fig. 3, stopping the rotation of the worm-gear. The spring will thus be wound up sufficiently to rotate the shaft g2 and elevate the rack-bars g'X into starting position.

From the foregoing description it will be obvious that no matter how careless the manipulation of the worm-shaft the spring can only be wound up or unwound to a predetermined extent and that the angular position of the shaft is fixed after rotation in one direction or the other.

In the construction shown in Fig. 5 the toothed rack-bars gx, to support the journals g of the cloth-roll shaft G, are as hereinbefore described, and the worm-gear h', meshing with the worm h2, fast on the shaft h3, mounted in a bearing h4, the segmental lug h5 on the wormgear, the projection Q6 on the loose collar g5, and the upright stand m, having the lateral stop m2, are also of like construction as shown in Fig. l. The shaft Q20, however, is, in the modified form of my invention, extended loosely through the gears g in mesh with the rack-bars, and the worm-gear h/ is fast on said shaft. Spiral springs $20, coiled around the shaft, are attached at their outer ends to the gears g and at their inner ends to collars Q30, which are fast on the shaft. From the construction shown it will be obvious that as the roll of cloth increases in weight it will descend, forcing the rack-bars gX downward,and thereby rotating the gears g in such a direction that the springs 320 will be wound up or increased in tension, the engagement of the worm-gear and worm locking the shaft g2() against rotation, so that the inner ends of the springs will be held fixed. When it is desired to relieve the spring tension, the wormshaft is rotated manually to unwind the spring sufficiently from the inner end. The controlling mechanism to govern the extent of rotation of the worm-gear 7L is precisely as shown and described hereinbefore and operates in the same manner.

In either form of my invention herein illustrated the roll of cloth is maintained pressed against the take-up roll firmly yet yieldingly, and the tension of the spring is varied by manually-operated means.

My invention is not restricted to the precise construction and arrangement herein shown, as the same may be modified or rearranged without departing from the spirit and scope of my invention.

Having described my invention, what I claim, and desire to secure by Letters Patent,

l. In a loom, sliding supports upon which the journals of the cloth-roll are mounted, connections between said supports to effect their movement in unison, and means to control said movement with a variable resistance.

2. In a loom, sliding supports for the clothroll journals, Xed guides for the supports, having open portions to permit insertion and removal of the cloth-roll journals, and springcontrolled means connecting and to govern the movement of said supports in unison.

3. In a loom, fixed guides, rack-bars movable thereon and adapted to support the clothroll journals, a shaft having gears fast thereon, said gears meshing with the rack-bars, and a spring adapted to control the rotation IOO IIO

of the shaft and thereby the movement of the rack-bars.

4. In a loom, sliding supports for the clothroll journals provided with rack-teeth, a shaft geared to said supports to effect their movement in unison, a controlling-sprin g attached at one end to the shaft and fixed at its other end, and means to manually vary the spring tension.

5. In a loom, fixed guides, rack-bars movable thereon and adapted to support the clothroll journals, a shaft having gears fast thereon, said gears meshing with the rack-bars, a worm -gear loose on the shaft, a meshing worm, to normally lock said gear, and a spring attached at its ends to said shaft and wormgear respectively, to control the movement of the rack-bars, rotation of the worm-shaft acting to relieve the tension of the spring.

6. In a loom, fixed guides, rack-bars movable thereon and adapted to support the clothroll journals, a shaft having gears fast thereon, said gears meshing with the rack-bars, a worm-gear loose on the shaft, a meshingworm shaft, to normally lock said gear, and a spring attached at its ends to said shaft and worm-gear respectively, to control the movement of the rack-bars, rotation of the worm-shaft acting to relieve the tension of the spring, combined with means to positively limit the rotative movement of said wormshaft.

7. In a loom, toothed, sliding, cloth-roll supports, a rotatable shaft, gears fast thereon in mesh with said'toothed supports, a wormgear loose on said shaft and having a laterally-projecting lug, an adjacent collar loose on the shaft and` having a projection in the path of said lug, and a fixed stop adapted to engage said projection and limit the rotative movement of the collar, combined with a spring connected at its ends to said shaft and worm-gear respectively, and a worm-shaft to manually rotate the worm-gear, the lug, projection and stop cooperating to limit the rotative movement of the worm-gear in either direction.

8.. In a loom, the take-up roll, fixed stands belowT it, longitudinally slotted and having openings for the entrance and removal of the cloth-roll shaft, sliding supports for said shaft, movable on said stands within the slots thereof, connections between and to effect simultaneous movement of said sliding supports, and a single controlling-spring connected with said connections and adapted to maintain the cloth-roll yieldingly against the takeup roll, with a pressure which increases as the weight of the cloth-roll increases.

9. In a loom, connected, longitudinallymovable supports for the journals of the clothroll shaft, a controlling-spring for said supports, located and arranged to be wound up as the weight of the cloth-roll increases, to therebyincrease the tension of the spring, and

independent means to decrease the spring tension when the cloth-roll is to be removed from its supports.

lO. In a loom, connected, longitudinallymovable supports for the journals of the clothroll shaft, a controlling-spring for said supports, located and arranged to be Wound up as the weight of the cloth-roll increases, to thereby increase the tension of the spring, independent means to unwind or wind the spring, and a device to positively limit the effective operation of said means.

1l. In a loom,longitudinally-movable clothroll supports provided with teeth, a connecting-shaft geared to said supports to effect their movement in unison, a spring attached at one end to said shaft, means to normally hold the other end of the spring Xed, and a controlling device for said means.

12. In a loom,longitudinally-movable clothroll supports provided with teeth, gears in mesh with said toothed supports, spring-controlledmeans connected with and to govern the rotation of the gears and thereby the longitudinal movement of the supports, and a governing device for said means.

13. In a loom, sliding supports for the clothroll journals, provided with rack-teetl1,springf controlled gears meshing with said rack-teeth, the resistance of the gears to rotation increasing as the weight of the roll of cloth increases, and normally-locked, manually-operated means to relieve the gears from the spring control, or vary the latter.

14. In a loom, a fixed guide, a longitudinally-movable rack-bar thereon and adapted to support a journal of the cloth-roll shaft, a gear meshing with said bar, a spring to controlthe rotation of the gear, and means to manually vary the spring tension.

l5. In a loom, a fixed guide, a longitudinally-movable rack-bar thereon and adapted to support a journal of the cloth-roll shaft, a gear meshing with said bar, a spring to control the rotation of the gear, a worm-gear with which one end of the springis connected, and a meshing-worm shaft, to normally lock said worm-gear.

16. In a loom, a fixed guide, a longitudinally-movable rack-bar thereon and adapted to support a journal of the cloth-roll shaft, a gear meshing with said bar, a spring to control the rotation of the gear, a worm-gear with which one end of the spring is connected, and a meshing worm, to normally locksaid worm-gear, combined with means to positively limit the rotative movement of said worm-gear.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES H. NORTI-IROP.

Witnessesz HERBERT S. MANLEY, GEO. Oris DRAPER.

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